178 LABORATORY AND FIELD EXERCISES 



(2) Pollination. Are all of the flowers of the family 

 cross-pollinated ? Compare the methods of pollina- 

 tion in peas, clovers, and vetches. 



b. Fruits and seeds. Do you find all fruits in the family 



similar to that of the pea, bean, and locust ? 



c. Summary. Summarize the distinctive characteristics of 



the Leguminosae under the above headings and in 

 the order indicated in the directions. This may be 

 done on a Family Record sheet if desired. 

 3. Economic importance. Study species which are of economic 

 and commercial importance in the family as indicated 

 under the Cruciferae. List several important commer- 

 cial species and the particular uses of each species. 



SUPPLEMENTAKY STUDY 



Each student should be assigned some species of the Leyuminosae, 

 such as the common red clover, vetch, or lupine, for individual 

 study and report. The report should include drawings to show 

 the following structures : 



1. Habit. 



a. Leaves. Observe the mechanism for adjustments of leaves 



to light, including the position of leaves in the morn- 

 ing, at noon, and at night. Make a brief statement of 

 the mechanism of movement in leaves with pulvini. 



b. Roots. Drawings of roots with tubercles. 



c. Reproduction. Observe and record the following facts 



relating to the flowers, fruits, and pollination : 



(1) The structure of the flower and pollinating mechanisms. 



(2) Fruit and methods of seed dispersal. 



(3) A brief discussion of the pollinating mechanism and 



of seed dispersal in such a species as the common 

 red clover. 



d. Analysis. Analyze two or more species of 



and record as usual. 



